The recipe for our #1 best-selling mattress? Refreshing green tea and over a decade of experience perfecting mattresses that make sleep a little more wonderful. Antioxidant-rich green tea helps keep your mattress fresh as a daisy, and ActivCharocal microparticles effectively block moisture. Precisely layered CertiPUR-US certified foams allow you to sink into this mattress just right. Our patented Custom Contour Support technology features a winning combo of exquisitely soft memory foam and super-dense base foam that offers a supportive feeling as it molds to your body shape, cradling your achiest joints and aligning your spine. Plus, with our top-quality high ILD layer of base foam, this mattress ensures you get the ideal level of support for restful sleep by preventing any uncomfortable sinking, sagging, or trouble turning in bed.